Long-decay soft X-ray flares

Details Long-decay soft X-ray flares Long-decay soft X-ray flares

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988baicz..39...97a&link_type=abstract

Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 39, no. 2, Jan. 1988, p. 97-105.

Astronomy and Astrophysics

Astronomy

1

Coronal Loops, H Alpha Line, Solar Flares, Solar Magnetic Field, Solar X-Rays, Thermodynamic Equilibrium, Dynamic Characteristics, Morphology

Scientific paper

Twenty cases of LDE flares have been analyzed from the viewpoint of the development of their morphology in the H-alpha line. It has been found that LDE flares may be classed as: (1) 'one-ribbon' flares, in which the long-lasting H-alpha emission loops are arranged along the axis of the filament, or along its channel; (2) two-ribbon flares; and (3) three-ribbon flares which are a combination of the first two types. The system of central loops (SCL) of the three-ribbon flares, is situated along the axis of the interribbon space and is a dynamic formation which cannot be mistaken for flare-loop tops. The repeated energy release, which occurs in the lower part of the interribbon space, indicates that the accumulation of energy, required for the formation of SCL and also for the trigger mechanism of the flare is concentrated in the low structures (lower than 3.5-7.0 thousand kilometers).

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